Hot-water heater.



Iowans D. P. GREENAWALT.

HOT WATER HEATER.

APPLICATION FILED MAR. 30, 1908 9 1 9, 344, V Patented Apr. 27, 1909.-

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UNITED STATES PATENT orruon.

DAVID F. GREENAWALT, OF ALTOONA, PENNSYLVANIA.

HOT-WATER HEATER.

To all whom it may concern:

Be it known that 1, DAVID F. GREENA- WALT, a citizen of the UnitedStates, residing at Altoona, in the county of Blair and State ofPennsylvania, have invented certain new and useful Improvements inHot-Water Heaters, of which the following is a specification.

The present invention relates to water heaters and has specially in viewan improvement in water heaters of the sectional type and combining thesame with a novel form of damper whereby the various draft flues may besimultaneously regulated.

' WVith the above and many other objects in view the present inventioncontemplates utilizing hollow arch shaped sections which are soconstructed that they will present a lower heating surface whichsurrounds the fire chamber and an upper cylindrical portion which is incommunication with said fire chamber and the smoke flue, whereby anadditional heating surface is provided for the water at the top of eachsection, and in arranging in said upper cylindrical portion a rotarydamper for regulating the admission of the products of combustion tosaid cylindrical portion.

In carrying out the invention various modifications in details ofconstruction may be resorted to, but a preferred and practicalembodiment thereof is shown in the accompanying drawings, in which likecharacters of reference have been used to designate corresponding parts.

Referring to said drawings-Figure 1 is a perspective view of theimproved sectional water heater. Fig. 2 is a longitudinal sectional viewtaken on the line 22, Fig. 3. Fig. 3 is a transverse sectional viewtaken on the line 33, Fig. 2. Fig. 41 is a detail sectional view of theupper portion of two of the Specification of Letters Patent.

Application filed March 30, 1908.

Patented April 27, 1909.

Serial No. 424,208.

Said sections 1 and 5, and also the front section 6 are of a hollow archshape, the hollow water legs 7 of which form the side walls of the firebox of fire chamber 8. The top and bottom of all the sections areprovided with oflstanding flanges 99, through each of which .endopenings 1O-10 are formed for the reception of locking bolts 1111carrying nuts 12, by means of which said sections may be locked togetherand. retained in a relatively immovable position. All of said sections,at their meeting edges, are also provided with flanges 13 which overlapthe flange of the adjoining section when said sections are broughttogether, and to insure of a tight connection between the overlappingflanges, suitable packing may be interposed therebetween.

The upper portion of the water legs 7 terminate in a hollow cylindricaldrum 1 1 which has a nipple connection 15 with the drum of the adjoiningsection thereby permitting of an unobstructed circulation of water upthe water legs 7 of one section, around the drum 14, through the nippleconnection 15 and to the drum of the neXt section.

It will be observed by reference to Fig. 2 of the drawings that when thesections are bolted together a continuous open. cylinder 16 is formed inthe drum 14 of the water heater, said cylinder 16 extending from thefront section 6 to the smoke flue 17 which is connected to the rearsection, intermediate upper and lower openings 18-19 being formedtherein, between the water legs 7 to permit the entrance thereto ofheatand other products of combustion.

A damper 20 is rotatably mounted in the cylinder 16, and consists of asemi-cylindrical structure one edge of which is provided'with aplurality of circulation notches 21, and its other edge being preferablyprovided with but one notch 22. In its operative position, one end 23 ofthe damper 20 projects slightly beyond the outer face of the frontsection 6, and has mounted thereon a cap 24 carrying an operating handleor lever 25 which may extends entirely through the cylinder 16 andterminates adjacent to the smoke pipe or flue 17 and that the pluralityof notches formed in one edge and the single notch formed in the otheredge are so located. that the damper may be rotated to aline them withall but one of the upper liue openings 19 and one of the lower flueopenings 18, or vice versa. By this relative arrangement of notches andupper and lower line openings, it is possible to obtain variousregulations of the amount of heat from the fire chamber that is admittedto the upper cylinder 16. And it will he further observed that the endcap 24- carried by the damper is of a size to effectually seal the endof said cylinder, therel'iy preventing the admi sion thereto of any ofthe cool, outside [1' The front section ti preferahly provided with anextended lower portion. 27 which forms a front casing for toe ash pit,and. also has an ash pit door 28, a draft door 29, and a stolring door30 hinged thereto.

Any preferred type of grate may he used in connection with thisinvention, an example thereof liieing shown in Fig. 2 in which a rockinggrate 31 is mounted on lugs or ledges 32 carried bv the l 'r.=-.'er,interior, portions of the water it The circulation of water through thescctions is preferably from the bottom to the top to obtain greaterbenefits from the lire owing to the location t he water legs rcla tivclyto the lire chaml and therefore it is proposed to admit the .iaterthrough the inlet pipes which causes it to have an upward trend throughthe hollow water legs,

l drums 14. and through the nipple arounc t me 7 connection to the drumof the adjoining section, and so on until it reaches one of the upperoutlet pipes From the foregoing description it will observed that thedescribed construction and arrangement of parts permits of the watersections lte'ng kept constantly in a higl'ily heated condition owing tothe fact that the water legst hereof surround the tire chamber, and thefurther fact that the products of combustion are conducted around. thedrum of each section, which insures of all portions of the said sectionsbeing practically at all times in contact with the lire. sin ll it willbe further observed that through the described arrangement of upperhollow drum of each section, an improved form of heating cylinder isprovided which is especially adapted for the described type of rotarydamper through the medium of which the drafts of the fire are socontrolled as to provide a communication between the lire and the upperand lower flue openings of the cylinder so as to assure of there beingat all times a circulation of the products of combustion around saiddrums.

As a further advantage of this type of heater may be mentioned. theself-cleaning element embodied in the rotary damper. The movement ofthis damper in the drum serves to clean the surface of the sections fromsoot and ashes which naturally collect and obstruct the heating effects.

Ulaims:

l. A water heater consisting of a plurality of hollow sections rigidlyconnected to ether, each of said sections being provided with water legsinclosing a the chamber and an upper hollow drum having an open cylinderprovided with line openings which communic c with the iire chamber, anda damper rotatably mounted in said cylinder and provided with notcheswhich cooperate with the said ilues in the cylinder.

2. A water heater consisting of a plurality of arch shaped hollowsections provided with water legs inclosing a fire chamber and an upperhollow water drum having a cylinder which communicates with the firechamber at points between the sections, and a horizontally rotatabledamper ext-ending longitudinally through said cylinder and having meansto regulate the communication between the fire chamber and the cylinder.

3. A water heater consisting of a plurality of arch shaped hollowsections provided with water inc-losing a lire chamber and an upperhollow drum having a cylinder rovii" i4 with line of upper and lower ueswhichv communicate with the lire chamber, and a dan er mounted in saidcylinder and provided with circulation notches which 00- operate withsaid fines to regulate the draft of the fire chamber.

l. A water heater consisting of a lurality of arch shaped hollowsections provi ed with hollow water legs inclosing a fire chamber and anupper hollow drum having a cylinder provided with a line of upper andlower lines which communicate with the fire chamber, and damperrotatably mounted in said cylinder and provided with a plurality ofnotches adapted to be selectively alined with either the upper or lowerllues of the cylinder, said damper being also provided with an end capwhich. forms closure for one end of said cylind e r.

5. A water heater consisting of a plurality of hollow arch shapedsections rigidly connected together and being provided with hollow waterlegs which inclose the fire chamber and an upper drum having alongitudinal cylinder provided. with a line of upper and lower lineswhich communicate with the fire chamber, a dam )er rotatably mounted insaid cylinder and provided with circulation notches which are adapted tobe selectively I In testimony whereof I hereunto :ifiix my V placed incommunication with either the g signature in the presence of twowitnesses. upper or lower line of iiues in the cylinder,

an end cap carried by said damper and form- 1 DAVID GREENAVVALT ing aclosure for the cylinder, and an operat- Witnesses: ing handle carriedby said cap whereby rota- 1 D. LLOYD CLAYcoMB,

tion may be imparted to said damper. N. E. GEE.

